Combined hoisting and weighing device



Jan. 26, 1954 A. F. LLANUSA COMBINED HOISTING AND WEIGHING DEVICE FiledDec. 50

5 Sheets-Sheet 1 [NVENTOR' .1

A. F. LLANUSA COMBINED HOISTING AND WEIGHING DEVICE Jan. 26, 1954 3Sheets-Sheet 2 Filed Dec. 50, 1950 w Q Q Q, WWI. I I I .I I I .ILWNI n NI. I .I I I I I .ll I mm I :T 1 fl r n Tm Q Q q N @R 8 I Q Q m LIATTORNEYS.

Jan. 26, 954 A. F. LLANUSA 2,667,275

COMBINED HOISTING AND WEIGHING DEVICE Filed Dec. 50, 1950 3 Sheets-Sheet5 1 N VEN 7019s.

ATTORNEJQS,

Patented Jan. 26, 1954 COMBINED HOISTING AND WEIGHING DEVICE AvelinoFernandez Llanusa, Manzanillo, Cuba Application December 30, 1950,Serial No. 203,587

2 Claims.

This invention relates to combined hoisting and weighing devicesparticularly adapted for sugar cane, which have to register the weightof the load after the load has been hoisted from a field cart and beforeit has been transferred to a railway car.

The object of this invention is to provide an improvement in thehoisting devices at present known and used at sugar-cane field sidings,which so simplifies the construction and operation of hoisting devicesthat it will revolutionize the mechanical art of combined hoisting andweighing devices.

It is a well-known fact that the sugar cane hoisting devices which areat present known and which are provided with a mechanism for registeringthe weight of the hoisted load as the latter is being raised from afield cart, include an upper slide track portion for the truck carrying.the hoisted load, which is disconnected from the rest of the slidetrack and is maintained in raised suspension by means of jibs secured tothe slide track and connected through a powerful lever and a cable tothe Weighing mechanism positioned adjacent one lower end of theframework uprights supporting the upper slide track. The construction ofa hoisting device with such a slide track portion disconnected from therest of the slide track for its movement in connection with the weighingmechanism is rendered greatly complicated and expensive, and thehandling of the truck carrying the hoisted load is rendered equallycomplicated by reason of the fact that it is absolutely necessary forthe truck to remain on said movable track portion in order that theweighing mechanism may operate to register the weight of the hoistedload to be transferred from a field cart to a railway car.

This invention provides a combined hoisting and weighing device whichfully eliminates the slide track portion in movable suspension and inconnection with the weighing mechanism, to which end the upper slidetrack of the hoisting device is made of one piece, without anydisconnected portion, and the movements of the truck when transferringthe sugar-cane load in suspension and after it has discharged the load,are rendered completely automatic by gravity. In the former movement ofthe truck, the slight inclination of the upper track is utilized, and inthe latter movement of the truck the gravitatory action of a weightconnected through a cable to one end of the truck is utilized, wherebythe system only requires a friction stop mechanism on top in order, whenpressed, to hold the truck in the desired position, and when loosened,to allow the truck to freely move backwards automatically.

This arrangement aifords the advantage that in any. position of thetruck carrying thehoisted load of sugar cane it will be possible thatthe weight of the load be registered on the scale as long as the sugarcane load is in suspension, which is attained by effecting thesuspension of the hoisting frame carrying the hoisted load by means of asingle cable whose ends are wound upon drums supported on the drivingshaft being operated to raise the sugar cane load from a field cart andto descend it, to a railway car, said suspension cable being bent at itsmiddle portion to form a downward incidence angle upon it being passedacross the eye of a shackle secured to the short arm of a levertransmitting the tensile stress on the load suspension cable to thelever of the weighing mechanism which is usually installed within acasing positioned on the ground adjacent the uprights at one end of theframework, whereupon as long as the sugar cane is being hoisted by thesliding truck, the load suspension cable is in tension thereby allowingthe net weight of the load to register on the scale withoutcomplications of tares or otherwise, whereby this combined sugar canehoisting and weighing device is more inexpensive to manufacture andsimpler in operation than an other device of its kind heretofore known.

The invention is described with reference to the figures of theaccompanying drawings, of which:

Fig. 1 is a front elevational view of the combined hoisting and weighingdevice of this invention.

Fig. 2 is a top plan view of same.

Fig. 3 is an end elevational view of same as viewed from the side atwhich both the driving mechanism for drawing the load suspension cableand the scale are situated.

detailed sectional view of the casing enclosing the scale, showing theconnection between the latter and the sole suspension cable used tosupport the load and which is guided by pulleys situated on the trucksliding on top of the hoisting device framework.

Like similar devices of this kind, the hoisting device of this inventioncomprises a framework provided with two uprights, one at each end, eachof which is composed of two grounded posts inclined towards each other Iand 2, which may be made of wood or metal, and which at their upper endsare joined together by a bolster 3 and at their base ends are joinedtogether by an angular bolster 3. Both end uprights are joined togetherat their upper ends by I-beams 5 and 6 spaced apart from each other andsupported on bolsters I secured to the posts I and. 2 of each endupright at a certain height beneath its upper ends equivalent to fromone-third to one-fourth the height of said uprights, for the purpose ofsupporting tracks 9 and lil adapted to slidably support thereon thetruck I I mountover the railway car I! into which the load I3 is to befinally discharged. The. framework is reinforced by two braces 8 joiningtogether the posts I and 2 of the upright corresponding to the frameworkside at which the conventional railroad track I1 is laid, and the beams5 and 6. One of the features of this hoisting device is that the beams 5and B supporting the slide track on which the truck II is adapted to runare slightly inclined at a 2 to 3 angle to form a downward slope fromone end upright to the other, and the beams 5 and 5 have secured abovesame opposed stops I8 and I9 to limit the slidable movement of thetruck, so that the truck carrying the sugar cane load I3 willautomatically travel from the upper end of the track to the lower endthereof, when it be desired to have the load discharged over the railwaycar H.

A further feature of this invention is that the truck II is connected atits upper end to a cable wound about a drum 2I secured to a horizontalshaft 2I' rotatorily mounted on journal bearings secured to the innerpoles of two pairs ,of poles 22 and 23, 24 and 25, which are fixed tothe upper bolster 3 and the intermediate bolster I included in theupright situated at the highest side of the slide track 5-6, the cable20 ending in a weight 26 hanging therefrom;

. The shaft 2 I has secured adjacently the drum 2| 2. wide pulley 21 fora friction brake 28 connected to a lever 29 which is operated by a cable33 connected at 3I to the hand lever 32, pivotally mounted on ahorizontal pivot 33 supported on two spaced apart braces 34 fixed to theground and secured at their upper end to the beams 5 and E supportingthe slide track.

The braces 34 have secured thereto journal bearings" 35 that rotatorilysupport the horizontal shaft 35 having fastened to its central portionthe vertical wheel 37 for the application of animal or mechanical powerfor raising the sugar cane load I3 from the cart I5 and discharging sameover the railway car I'I, said wheel having a channeled portion 38 forthe friction brake 39 whose ends are connected to a second hand lever 40pivotally mounted, similarly as lever 32, on a second horizontal pivot4| secured to the braces 34.

The third and most important feature of this hoisting device is that thesuspension of the frame I4 adapted to carry the sugar cane load I3 iseffected by means of a single cable 42 the ends of which are wound abouttwo drums 43 and 44 keyed to the driving shaft 35 at each side of thedriving wheel 31, and from the drums 43 and 44 the two end portions ofthe cable 42 extend upwardly to be guided over two ballbearing pulleys45 and 45 rotatorily mounted on horizontal shafts 41 and 48 respectivelysupported on the two pairs of vertical poles '22 and 23, 24 and then thetwo end portions of the cable 42 extend in a slightly inclineddirection, and then across the frame of the movable truck to the opposedupright corresponding to the lowest end of the beams 5-6 whereat saidcable portions 42 are bent in a completely reversed direction by meansof pulleys 5| and 52 mounted on ball-bearing horizontalshafts 53 and 54supported on pairs of poles secured to the upper bolster 3 and theintermediate bolster I secured to the posts I and 2 of the uprightcorresponding to the lowest portion of the beams 5-6.

Then, said cable portions 42 are guided towards beneath the truck II bymeans of two pulleys 55 and-5S'mounted by ball bearings on horizontalshafts 51 and 58 supported on two pairs of bolsters 5594:1(1 65 securedto the frame of the truck II, and then about two pulleys mounted throughball bearings BI on a horizontal shaft 62 carried by the frame I4 ontriangular pieces 53 secured to the endsthereof; then said cableportions 42 again extend upwardly to the truck II to be bent in ahorizontal direction by two pulleys 54 and 64' mounted through ballbearings on horizontal shafts 65 and 56 supported on the pairs ofbolsters 59 and 50 secured on the frame of the truck II, and said cableportions 42 are then bent downwardly and outwardly the framework of thehoisting device by means of two pulleys 6'1 and 68 mounted through ballhearings on horizontal shafts 69 andIIl supported on the two pairs ofvertical poles 22-23, 24-25 at the other end of the framework, whereatthe two portions of cable 42 are joined together by an intermediateportion thereof. Said intermediate portion forms a downward incidenceangle upon passing through and being retained by the eye of a shacklebolt II which is connected through a knife edge bar I2 with the lever ofdissimilar arms I3 joined to a weighing scale installed within -a casingI4 situated on the angular bolster 4 that inferiorly joins together theposts I and 2 of the upright immediate the driving wheel 31.

, Said lever I3 rests through the knife edge bar I5 on the eye of aneyebolt I6 secured by its lowerend to the angular bolster 4, while theend of the longer arm of lever I3 is connected through a knife edge bar1! and a double-eye eyebolt I8 with the knife edge bar-I9 secured to thescale lever 8!] hanged from the top portion of the casing I4 through theeyebolt 8I and knife edge bar 82. The graduation of lever is marked onthe plates 83 and 84 forming the longest arm oflever 80 and on which themovable weights 85 and 86 are adapted to slide, said lever 80 having atits ends eyebolts 81 and 88 respectively supporting the dish 89 andweights 9'0, and said dish 89 being adapted to support the weights'thatwill determine the weight of each sugar cane load I3. 7

The operation of the described hoisting device is as follows; Assumingthat truck II is maintained in vertical position over the place occupiedby the cart I6, the brake 28 is pressed through lever 29 to hold thetruck II, and the frame I4 is lowered upon the cart I6 preparatory tohanging up through slings I5 the load of sugar cane I3,in the cart I6,to which end it will be sufiicient to loosen the brake 39 of verticalwheel, 31 by means of the hand lever 40. Once the slings I5 are attachedto the sugar cane load I3, the frame I4 willbe raised by operating thewheel 31' by means of any suitable source of power, whereupon the endportions of cable 42 will be wound about drums 43 and 44. The weight ofthe load will immediately be registered on the scale, by reason of thefact that the weight of'the load I3 is automatically transmitted by thetension of cable 42 to the shackle bolt 1I secured to the scale lever13, and

aslon'gas the truck 'II retains the load I3 in suspension in anyposition of the truck on the slide track 9-10, the weight will beregistered on the scale. It is then desired to traverse the load so thatit will be directly over the railway car 17. This can be done byloosening the brake 28 which holds the truck I l in immovable position,whereupon the gravity action of the weight of load I3 will cause thetruck to move on the slide track 9|0 towards the lower end of the latteruntil it is stopped by stops l 9, and then upon releasing the brake 39of driving wheel 31, the frame l4 will be caused by the weight of loadE3 to automatically descend until it is directly over the railway carl1. Once the slings [5 are released, the frame 14 is again raised byoperating the shaft 36 of the driving wheel 31, whereupon the truck IIwill automatically move back to its original position adjacent the stopsI8, in virtue of the action of the weight 25 which upon being freed fromfriction of brake 28 .on the pulley 2! will drop and carry along with itthe truck II which will thus be in position for hanging up a next sugarcane load in another cart placed beneath the conveying device.

As it is seen, the operation of this combined conveying and weighingdevice is most simple, the hoisting and releasing operations of thesugar cane load 13 depending upon a single cable 42 which is permanentlyconnected at an intermediate point thereof to the lever of dissimilararms which forms part of the weighing mechanism and which immediatelytransmits the weight of the load to the graduated scale, and once thetruck H has discharged the sugar cane load l3, the same willautomatically move to its original position upon the action of theweight 26, whereas when the sugar cane load I3 is hoisted, the truck Hwill automatically move to the lower end of the slide track 9I0 invirtue of the inclination of the latter towards the side at which ispositioned the railway car I! to which the load is to be transferred.

It is obvious that changes may be made in the construction details ofthe conveyor and the weighing mechanism, without thereby altering theessential character of the invention, which is such as claimedhereinafter.

What I claim is:

1. In a combined hoisting and weighing device, the combination with asupporting framework comprising two slightly inclined beams and endupright members supporting the ends of said inclined beams, a track onsaid inclined beams, and a truck movable on said track and provided withtwo pairs of pulleys, of driving means comprising a horizontal drivingshaft rotatably supported on braces fixed at their lower ends to theground and at their upper ends to the inclined beams adjacent the higherend upright member, a driving wheel keyed to the central portion of saidshaft, and a pair of drums keyed to said shaft at each side of saiddriving wheel, a pair of ball-bearing pulleys idly supported at theupper portion of the higher end upright member, a pair of ball-bearingpulleys idly supported at the upper portion of the lower end uprightmember, a load suspension frame carrying two ball-bearing pulleys idlysupporting thereon, a weighing scale in front of the driving means andnear them, and a single load suspension cable the end portions of whichare Wound about said drums respectively and extend upwardly around theball-bearing pulleys supported on the higher end upright member of saidframework and pass from one end to the other end of the supportingframework across the truck and are then reversed in an oppositedirection by the pulleys supported at the upper portion of the lower endupright member of the framework to be guided to beneath the truck bypassing around the pulleys of the truck to pass around the pulleys ofthe load suspension frame, said single cable forming at its middleportion a downwardly incidence angle suitably connected to the beam ofthe weighing scale, whereby as the load is hoisted and kept insuspension from said cable the weight of the load will be registered onthe weighing scale in any position of the truck carrying the loadsuspension frame.

2. In a combined hoistin and weighing device, the combination with asupporting framework comprising two slightly inclined beams and endupright members of unequal height supporting the ends of said inclinedbeams, a track on said inclined beams, and a truck movable on said trackand provided with two pairs of ball-bearing pulleys, of drivin meanscomprising a horizontal driving shaft rotatably sup-ported on bracesfixed at their lower ends to the ground and at their upper ends to theinclined beams near the higher end upright member of said supportingframework, a driving wheel keyed to the central portion of said shaft,and a pair of drums keyed to said shaft at each side of said drivingwheel, a pair of ball-bearing pulleys idly supported at the upperportion of the higher end upright member, a pair of ball-bearing pulleysidly supported at the upper portion of the lower end upright member, aload suspension frame carrying two ballbearing pulleys idly supportedthereon, a weighing scale the casing of which is secured to the base ofhigher end upright member in front of the driving means and providedwith a shackle bolt secured to the shorter arm of its beam and raisingupwards from it, and a single load suspension cable the end portions ofwhich are wound about said drums respectively and extended upwardlyaround the ball-bearing pulleys supported on the higher end uprightmember of said framework and pass from one end to the other end of thesupporting framework across the truck and are then reversed in anopposite direction by the pulleys supported at the upper portion of thelower end upright member of the framework to be guided towards beneaththe truck by passing around the pulleys of the truck to pass around thepulleys of the load suspension frame, said single cable forming at itsmiddle portion a downwardly incidence angle at the apex of which isconnected to the weighing scale by passing through the eye of theshackle bolt raising from the weighing scale beam, whereby asthe load israised and kept in suspension from Sald le cable the weight of the loadwill be registered on the weighing scale, in any position 0f the truck cy g the load suspension frame.

AVELINO FERNANDEZ LLANUSA.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 535,219 McDowell et al. Mar. 5, 1895 1,391,411 Roces Sept. 20,1921 1,467,013 Rodriguez Sept. 4, 1923 1,922,176 Ruhland Aug. 15, 1933

